The story is simple to follow, unlike previous games, you've mayb had to play it more than once to fully understand certain parts etc...
With FFXII though, its kinda like FF8 in that there's a sub plot which leads on to the main plot.
That's all i can really because knowing me i'd give it away accidently.
Though i'll say tne main thing is when opening thing on the License board, try to given an even balance to both side of the license board and always look for the better weapon, things will go much much easier then. The license board is not that hard, LP's are like collecting mana and power spheres on FFX, then you use them to open the slots.